Controller creates cost effective LCD designs

The EM6111 is a low multiplex controller and driver for monochrome TN and STN LCDs.

Available now from EM Microelectronic, the EM6111 is a low multiplex controller and driver for monochrome TN and STN LCDs.

The EM6111 is the second in EM Microelectronic's family of segment LCD drivers.

It is a simplified version of the EM6110.

The EM6111 can be operated on the same wide supply voltage levels, ranging from 1.8V in static mode to 5.5V.

"This controller allows for very simple and cost effective application designs", says Mougahed Darwish, President of the Management Board of EM Microelectronic.

"It comes in a small MLF16 package, measuring only 4 x 4mm, and it requires no external components".

The new circuit has a driving capability of one or two rows of seven columns, with a display refresh implemented internally.

The RAM data correspond directly to the LCD pixels (segments); a set bit in the RAM results in an activated LCD pixel.

All segments can be individually turned on or off by set or blank bit commands, respectively.

A two-wire serial mode interface is used to control the circuit for initialisation, memory programming and circuit status readout.

Depending on the number of segments to be controlled, the EM6111 will be operated either in static or in multiplexed mode.

The wide operating temperature range of -40 to +85C and low power consumption makes this component suitable for small devices for indoor as well as outdoor purposes.

With its very small package and its energy efficiency, the EM6111 is ideal for portable and battery operated products.

The controller is especially well-suited for applications having to display very simple information or to indicate status information such as in headset applications, LCD battery indicators and industrial measuring instruments like balances and scales, utility meters, etc.

The EM6111 circuit is available from EM Microelectronic and its authorised distributors.

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